With a sharp needle a pseudocyst is punctured and a placement set inserted through which a double pig tail is finally placed.
Pseudocysts of the pancreas develop from areas of necrosis during an acute pancreatits or during a flare-up in chronic pancreatitis with agglutination of the duct system. Through extravasationor retention of fluids the pseudocyst can grow further. Another possible aetiology is trauma of the pancreas which causes a pancreatitis.
Contrary to real cysts there are no epithelial cyst walls but only a badly distinguishable border zone which can be partly granulation tissue. The cyst wall of a pseudocyst only develops during the first weeks, a process which is referred to as “maturation”. Before that it is called an “acute accumulation of fluids” in the pancreas.